Features low investment cost, high air volume, low noise, low energy consumption, stable operation, long service life, and high efficiency. The automatic opening and closing of shutters achieve dustproof, waterproof, and aesthetically pleasing effects; it can both blow air and exhaust air, making it an ideal choice for modern workshop cooling and ventilation. Environmentally friendly and energy-saving negative pressure fans will become the mainstream in the ventilation and cooling equipment market.

Cooling Principle of Jinhua Yong Negative Pressure Ventilation
Negative pressure fans utilize the cooling principle of air convection and negative pressure ventilation. They are machines that naturally draw in fresh air from opposite directions—such as doors or windows—and rapidly force out stale indoor air, improving any ventilation issues with an effectiveness rate of 90%-97%. Wet curtain (water curtain) cooling primarily relies on the physical principle of water absorbing heat from the air during evaporation, thereby lowering air temperature. In practice, when used in conjunction with negative pressure fans, the wet curtain is installed on one end gable or side wall of an enclosed space, while the fan is installed on the opposite end gable or side wall. The cooling fan extracts indoor air, creating negative pressure that forces outdoor air to flow through the porous, moist surface of the wet curtain. This process converts a significant amount of heat, reducing the incoming air temperature by 10-15°C and continuously introducing it indoors for heat relief and cooling. After installation, it can very effectively improve high-temperature and stuffy environments in workshops, rapidly reducing indoor temperatures (from 32-45°C high-temperature environments) within 10 minutes and maintaining temperatures at 26-30°C. This enhances employee工作效率 and ensures high product quality. Its cooling, ventilation, and air exchange effects can very effectively address 95-99% of workshop high-temperature, stuffy, and air pollution issues. It can both blow and exhaust air, with guaranteed quality, making it an ideal choice for cooling and ventilation in greenhouses and similar settings. The environmental cooling effect and energy-saving benefits of cooling water curtains are unmatched by other cooling equipment.

1. For exhaust ventilation: Installed outside workshop windows, typically at the downwind side to extract odorous gases; commonly used in chemical plants and similar industries.

2. Used with wet curtains: For workshop cooling during hot summers. No matter how hot your workshop is, the wet curtain-negative pressure fan system can reduce the temperature to around 30°C while maintaining certain humidity levels.

3. Applicable scope of negative pressure fans:

A. Suitable for high-temperature or odorous workshops: such as heat treatment plants, foundries, plastic factories, aluminum profile factories, shoe factories, leather goods factories, electroplating plants, dyeing factories, and various chemical plants.

B. Suitable for labor-intensive enterprises: such as garment factories, various assembly workshops, and internet cafes.

C. For ventilation and cooling in horticultural greenhouses and livestock farms.

D. Particularly suitable for places requiring both cooling and certain humidity levels: such as cotton mills, woolen mills, linen mills, weaving factories, chemical fiber plants, warp knitting factories, texturing factories, knitting factories, silk weaving factories, hosiery factories, and various other textile mills.

E. Applicable in the warehousing and logistics sector.

For details, please contact:
Changsha Huayong Air Conditioning Equipment Co., Ltd.
Contact Person: Manager Li
Mobile:18608406119  
Email:cshuayong@163.com  
Tel:0731-83999767
Q-Q :2681043669
Address: Building 3, No. 98 Xiongtian Road, Longping High-Tech Park, Furong District, Changsha City, Hunan Province